OBD adapter for final coding when retrofitting the Auto Hold (Hill Hold) / Hill Start Assist system Compatible with the following models: Audi A4 8K Audi A5 8T Audi Q5 8R Simply connect the adapter to the vehicle's OBD interface - done! The interface takes care of all necessary coding independently Scope of delivery: 1 coding dongle Note: This coding adapter can only be used for one vehicle